[Puppet Users] Error: Could not set 'file' on ensure: Not a directory - /var/lib/puppet/lib/puppet/parser/functions

Hi,

I have just downloaded the puppetlabs-stdlib forge module, and attempted to
install it on one of my nodes, but I end up with the following errors on
the client:

Error: Could not set 'file' on ensure: Not a directory -
/var/lib/puppet/lib/puppet/parser/functions/ensure_packages.rb20150709-11429-z09hnu.lock
Error: Could not set 'file' on ensure: Not a directory -
/var/lib/puppet/lib/puppet/parser/functions/ensure_packages.rb20150709-11429-z09hnu.lock
Wrapped exception:
Not a directory -
/var/lib/puppet/lib/puppet/parser/functions/ensure_packages.rb20150709-11429-z09hnu.lock
Error:
/File[/var/lib/puppet/lib/puppet/parser/functions/ensure_packages.rb]/ensure:
change from absent to file failed: Could not set 'file' on ensure: Not a
directory -
/var/lib/puppet/lib/puppet/parser/functions/ensure_packages.rb20150709-11429-z09hnu.lock
Error: Could not set 'file' on ensure: Not a directory -
/var/lib/puppet/lib/puppet/parser/functions/validate_hash.rb20150709-11429-xwzk5n.lock
Error: Could not set 'file' on ensure: Not a directory -
/var/lib/puppet/lib/puppet/parser/functions/validate_hash.rb20150709-11429-xwzk5n.lock
Wrapped exception:
Not a directory -
/var/lib/puppet/lib/puppet/parser/functions/validate_hash.rb20150709-11429-xwzk5n.lock
...
...


All functions that are part of the puppetlabs-stdlib module produce the
above errors when I run a puppet agent on the client!!

I am running puppet-server-3.7.4-1 on the server, and puppet-3.7.4-1 on the
client. I would appreciate any help on this issue

Regards

Kareem